The visuals are a LOT better than in the trailers. Not really spoiling anything because it's just the setting, but you are exploring a mysterious base across a wide range of biomes. I'm around 40-50% through, and there is a lot more than the trailers show, and I think they were early builds. The backgrounds are dynamic and have a lot of detail and things going on, wildlife running around, great stuff.
TBH, I really wish the game had a "Scan Visor" function with lore and info on the different animals. It'd work fine with the touchscreen.